1996 Camaro Z28 idle and rpm issues - CamaroZ28.Com Message Board

LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

1996 Camaro Z28 idle and rpm issues

Old 02-16-2018, 07:37 PM
  #1  
Registered User
Thread Starter
 
Misha RU's Avatar
 
Join Date: Feb 2018
Location: Texas
Posts: 2
1996 Camaro Z28 idle and rpm issues

Hello Iím just on here to see if I can have my car fixed I will upload a video you can watch hopefully itíll helps but my issue is the car will be chocking and the rpms will lower and once it gets low enough the car will shut off
Misha RU is offline  
Old 02-16-2018, 08:12 PM
  #2  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,858
Re: 1996 Camaro Z28 idle and rpm issues

I'm going to move this to "LT1 Based Engine Tech"..... not likely to get many responses in the "..... Podcast" forum.
Injuneer is offline  
Old 02-16-2018, 08:21 PM
  #3  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,858
Re: 1996 Camaro Z28 idle and rpm issues

Have you checked the fuel pressure? Have you scanned it for codes? Engine stock or modified? Manual or auto trans?
Injuneer is offline  
Old 02-16-2018, 08:32 PM
  #4  
Registered User
Thread Starter
 
Misha RU's Avatar
 
Join Date: Feb 2018
Location: Texas
Posts: 2
Re: 1996 Camaro Z28 idle and rpm issues

Have not checked the fuel pressure I’ve replaced fuel pump about 30,000 miles ago I’ve got a fuel filter i will replace tomorrow and also I guess check the fuel pressure, the codes nothing shows up which is weird, engine is replaced with the same one lt1 had it now for a year I put in headers about two months ago so no egr and trans is auto also been rebuild the same time as the new engine so I’ve already put spacers between the icm and the new icm, cleaned iac and throttle body, I’ve also put a spacer to increase idle it seemed like it helped but it started to acting up the next day and I’ve also had to put a little more coolant
Misha RU is offline  
Old 02-16-2018, 09:53 PM
  #5  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,858
Re: 1996 Camaro Z28 idle and rpm issues

Have you checked the idle air control (IAC) valve circuitry:

http://shbox.com/1/iac2.jpg

4th Gen LT1 F-body Tech Articles

Where did you put a "spacer" to increase idle? There's an adjustable idle stop screw, but that is just going to fight the IAC valve, and can throw the TPS volts off.
Injuneer is offline  
Old 02-17-2018, 05:49 PM
  #6  
Registered User
 
Join Date: Jun 2003
Posts: 820
Re: 1996 Camaro Z28 idle and rpm issues

it starts but when you put it in gear it stalls....could be a sticking or failed IAC

You won't know though unless you have some form of scan software that can read IAC counts...and if not throwing $70 at it buying a new IAC

Checking fuel pressure is always prudent when trying to diagnose a engine problem to rule in/out fuel as being the cause before moving on to ignition

you should never really F with turning the TB stop screw. As mentioned that will change your TPS vdc which in turn will mess with, among other things, your shift points and transmission line pressure

do you have a stock TB?
Chimera96 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Biggiebound
LT1 Based Engine Tech
10
04-22-2015 12:28 AM
Asitler82
General 1967-2002 F-Body Tech
0
06-04-2014 11:30 AM
dmal2012
General 1967-2002 F-Body Tech
4
10-30-2013 07:20 AM
james55
LT1 Based Engine Tech
19
01-13-2013 11:49 PM
TDog
LT1 Based Engine Tech
4
05-28-2004 08:37 AM


Thread Tools
Search this Thread
Quick Reply: 1996 Camaro Z28 idle and rpm issues


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.